Chuck



FIG. 1 is a perspective view of a chuck embodying the design of the present invention;

FIG. 2 is top elevational view of the chuck illustrated in FIG. 1;

FIG. 3 is a bottom elevational view of the chuck illustrated in FIG. 1;

FIG. 4 is a left side elevational view of the chuck illustrated in FIG. 1;

FIG. 5 is a right side elevational view of the chuck illustrated in FIG. 1

FIG. 6 is a front view of the chuck illustrated in FIG. 1; and,

FIG. 7 is a rear view of the chuck illustrated in FIG. 1.

Broken lines are for illustrative purposes and form no part of the claim. 

The ornamental design for a chuck, substantially as shown and described. 